Roller skate



UNETED STATES PATENT ROLLER SKATE.

1,406,643. Original application filed January 15,

1920, Serial No. 351,580. Divided and this application filed August a,1920. Serial No. 402,357.

Y 0 (AZ? whom 2 f concern Be it known that l, Earner EASTMAN HARDY, acitizen of the United States, residing at Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Roller ents already issued to me, to wit :-Nos.

1,152,813 1,228,111 1,276,212; and 1,345,848; and also in certainapplications filed by me, to wit:-Serial Nos. 351,579; 351,580; and402,368; and is divisional of application 351,580 mentioned and filedJanuary 15, 1920, and the object of the particular improvement hereinshown and described is to effect-improved forms of construction andarrangement pertaining to details of .hub structures and wheelmountings.

In the accompanying drawing Figure 1 is a side elevation of my improvedroller skate.

Figure 2 is a plan view of the blank for the frame member.

Figure 3 is a longitudinal sectional View, on an enlarged scale.

Figure 4 is a sectional view, on a still further enlarged scale, throughthe front shaft.

Figure 5 is a sectional view on the line 1010 of Fig. 1. V

Figure 6 is a sectional view through the clamping bolt for the frontheel lug member.

Figure 7 is a sectional view of the hearing and wheel structure shown inFlg. 5, removed from the shaft member.

Figure 8 is an end elevation of the filling washer shown in Fig. 7.

Figure 9 is a side elevation of the holding tube shown in Fig. 7.

Figure 10 is a side elevation of one of the rear shaft members.

, Figure 11 is a sectional view on the line 1l--11 of Fig. 5, showingthe cotter pm that holds the two shaft members together and adjacentparts. i

My improved roller skate comprises a frame 10 that is made of one pieceof sheet material, is supported at the front end by the front wheelstructure 11 by means of a pair of front side arms 12 that are integralwith the frame body 13 and at the rear end by a pair of rear Wheels 14;by

means of a pair of rear side arms 15 that are also integral with thesaid frame body 13, and has on the rear end of the frame a pair ofintegral fixed heel lugs-16. v

Operatively mounted on the front end portion 17 of the frame lOis a pairof toe clamping lugs 18 and adjustably mounted on the frame in front ofthe heel space 19 at the rear end portion is the front heel stop member20. 1

Considering the blank for the frame member, shown in Fig. 2, the bodyportion13 extends from end to end,comprises at the rear end portion theheel space 19 and at the front end the front end portion 17, alreadymentioned, and intermediatethese parts are the front arms 12 adjacentthe front end portion 17, the rear arms15 adjacent the heel space 19,and between the said arms, and at about the middle, is the middleconnecting portion 21.

The arms 12 and 15 have a plurality of pairs of mating holes for theshaft devices for alternative use, for providing a choice forpositioning the said devices for chang ing the length of the wheel treador base, there being, shown, three holes in each ofthe said arms. Theholes 22 in the front arms 12 are round, for receiving the shaft screw23 that holds in place the shaft 24 for the front wheel structure 11.the said shaft 21 being of tubular form and threaded suitably to receivethe said screw 23.

The holes 25 in the rear arms 15 are square to provide an operative fitfor the square portion 26 of the rear shaft part 27 that is housedtherein.

The front end portion 1 7 is provided with a hole 27 for the toeclamping bolt 28, for the toe clamping members 18. i

The body portion 13 is provided in the portion in front of the heelspace 19 with a longitudinal slot 29 along the axis, the border edge ofwhich on one side, on the right side, as shown, has a series of teeth30.

Theheel lug clamping bolt 31 is entered into position from the upperside,*the head 32 engaging with the upper face of the body portion ofthe heel lug member 20, and a wing nut 33, mounted on the threaded lowerend portion 34, engages with the under face of the body portion 13 ofthe frame 10. Intermediate the head 32 and the threadedportion 34, is ashort body portion 35, havinga length about the same as or slightly lessthan the combined thickness of the material of ormcn.

Specification of Letters Patent. Patented Feb. 14,, 1922; V

the body portion of the heel lug member 20, and that of the frame body13. A projection or tooth 36 engages with the projection from the saidbody portion 35 of the bolt 31.

r'ls to the wheel structures, these may be provided w'th balls in thebearing devices or a bearing device may be provided without using balls.As shown, balls 37 are usedin the bearings for the front wheelstructure, shown. insection'in Fig. 4, and the bearing structure for therear wheels 14 is such that balls can be used but in the constructionand arrangement shown the spacein which the balls could be housed isfilled by substitute filling devices, as seen in Figs. 5 and 7.

The wheel proper in all cases isv made of sheet material and has a hubstructure that is provided with a recess or chamber 38 extendinginwardly from the outer face that serves as a chamber that issubstantially the same. for the front and the rear wheels. In the caseof the front wheel structure 11 the balls-37 are housed in the innerpart 39 of the said recess or chamber 38 and the outer portion40'tl1ereof is closed by a washer structure 41 that serves as the outercone inember in cooperation with the balls 37.

In the case of the front wheel structure 11 the hub structure 42 has anopening 43 in the inner end wall'of the recess or chamber 38 that fitsover the shaft tube 26 and is adapted to serve as an: emergency bearing.

ihlSO, on the outer side of the balls 37 the border wall of the outerportion 40 of the recess or chamber 38 that is opposed to theperipheryof the cone washer structure 41 is adapted to cooperatetherewith as a hearing.

A washer 44 may be positioned between the outer' face of the cone member41 and the sruoportihg arm 12, the opening therein fitting over theshaft 26, the said washer 44 being sufliciently large to extend over themouth of the recess 0r chamber38 and have the outer portion 45positioned in opposition to a part of the outer face of the wheelstructure.

The front wheel structure 11 is composed of two similar wheel devices 46made of sheet material that are positioned so that the edges of the rimor tread portion 47 meet along the median line and the recesses 38 areoutwardly disposed, the hub structures 42 being mounted on the tubularshaft 26 and being each provided with the hearing structure described.

The tubular shaft 26 may be threaded on the interior for the entirelength, as shown, so that a holding screw 23 may be inserted in eachend, the ends of the tubular shaft 26 being in abutment with the arms12, so that a rigid connection with these arms 12 is made by means ofthe two screws 23 inthe ends.

In the case of the rear wheels, each of the two individual wheels 14 isincorporated witha-bearing structure in such a way as to form a completeand operative device that is held together by means of a tubularelement-48 and that is adapted to be mounted a unit on one of. the shaftparts 29, as is shown in Fig. 7.

The cup or recess 38 is filled by two pieces, comprising a cupped washer49 that fits and fills the b'orderwall thereof as a lining and has avrecess 50-011 the outer face and which fills in part of the space alongthe axis. The remainder of the space along the axis is filled by a flatwasher Therecess 38' is on the outer side of the hub structure 52 andthe inner portion thereof is in the form of a sleeve 53 that extendsalongthe axial portion inwardly from a shoulder 54 at the junction ofthe said sleeve 53 and the body portion of the hub structure 52.

The sleeve 53 and the filling washer 49 are operatively mounted on asleeve 55 and which serves as a bearing therefor.

On the inner end portion of the hub struc ture 52 is a cup structure 56that fits thereover, and comprises an end wall or body portion 57 thatabuts against'the inner end of the bearing sleeve and is'opposed to theinner end ofthe sleeve 53 and a sleeve portion 58 that fits over thesleeve and abuts against the shoulder 54.

The cup structure 56 is a fixed member and serves as a bearing devicefor the opposed parts of the wheel member 14. i

T he holding tube 48 is of bendable thin metal, has the body portionextended through the fixed parts of the wheel mounting. comprising thebearing sleeve 55, at the middle of the body 57 cup structure 56 beingat the one end and the end washer 51 at the other end.

The heads 59 of the holding tube 48 are formed, as shown, bybendingoutwardly the plurality of fingers 60 that are formed at the ends of'thetube 48 by means of longitudinal slits 61.

The bore of the holding tube 48 is a fit for the cylindrical outer endportion 62 of the shaft part or member 27 on which it is mounted. v

The complete rear shaft'structure is composed of two similar shaft parts27 that are positioned in alignment and have at the middle of the shaftstructure overlapping parts 63 that are connected together so as topermit of a relative pivotal movement by means of a pivotal pin that ispositionedin suitable holes in the overlapping parts 63, a cotterpin64-being used for this purpose in the structure shown, the saidcotter-pin being elongated and extendingalso through an exterlor housingstructure, composed of a tube 65 and a filling structure 66.

Each shaft member27 comprises a head 67 at the outer end; theoverlapping part 63 at the inner end; the square supporting portion 26adjacent the middle; the cylindrical portion 62 for receiving thetubular holding part 48 of the combined wheel and bearing unit betweenthe said square supporting portion 26 and the head 67 at the outer end;and

a reduced, cylindrical connecting portion 68 a casing and being ofappreciable diameter,-

so that the interior wall is separated from the enclosed parts of theshaft members 27 by an appreciable space, and the said space is filledby the filling material 66, which. is of soft rubber. Thus the fillingmaterial 66 is such as is adapted to yield, responsive to pressure ofthe shaft parts housed therein, so that the said shaft parts are free totilt or swing relatively one to the other within limits determined bythe structure of the housing, and the rear wheels are mounted on ayielding and resilient structure that permits of a limited relativerocking movement for the two wheels.

I claim as my inve'ntion:

1. A roller skate comprising a frame having a body, a front wheelstructure positioned under the front end portion of the said body, apair of side arms extending downwardly from the said body in spacedrelation, a shaft extending through the said wheel structure and havingthe ends in abutment with the said arms, and the said shaft being oftubularform, having the interior screw-threaded and provided withholding screws at the ends for connecting with the said side arms.

A roller skate having a rear wheel structure and bearing devicestherefor combined in a unitary device, comprising a bearing sleeve, awheel proper having a hub portion provided with a bore that fits overthe said sleeve, positioning devices at the ends of the said hub portionand in engagement with the end portions of the said sleeve, and meansfor operatively holding together the said sleeve and positioning devicescomprising a tubular structure, having the body portion extended throughthe said sleeve and also through the said positioning devices, andhaving the ends outwardly flanged for en gaging with the outer faces ofthe said positioning devices.

3. in a roller skate, a frame having a pair of downwardly directed sidearms for connecting with a wheel shaft, being in parallelism and inspaced relation, the said wheel shaft being extended across the spacebetween the arms, with the ends in abutment with the said arms, a wheeloperatively mounted on the said shaft, the said shaft being of tubularform and having interior threads that extend inwardly from the ends, anda holding screw on each side, extended through openings in the said armsand having engagement with the said interior threads, whereby the saidarms and shaft are held rigidly together.

EMERY EASTMAN HARDY.

